Relationships for Size and Dispersion of Pores with Mix Factors for Cement Sand Mortar

Abstract:

In this study the effect of age, w/c ratio on mean distribution radius and dispersion of pores in Ordinary Portland Cement (OPC) sand mortar was determined through Mercury Intrusion Porosimetry (MIP) test. For this purpose the cement sand mortar specimens were prepared from two different types of OPC with varied w/c ratios such as 0.2, 0.3, 0.4, 0.5 and 0.6 and tested at different curing ages from 1 day to 90 days. Separate relationships relating the mix parameters such as w/c ratio and age with mean distribution radius (r_0.5) and coefficient (d) representing dispersion of pores, are developed for OPC sand mortars.

• Periodical: Materials Science Forum (Volume 866)
• Pages: 37-42
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.866.37
• Online since: August 2016
• Authors: B. Kondraivendhan*
• Keywords: Dispersion, Mercury Porosimetry, Mortar, Pore Size Distribution, Pore System

References

[1] R. Kumar, B. Bhattacharjee, Study on some factors affecting the results in the use of MIP method in concrete research. Cem. and Concr Res. 33(2003) 417-424.

DOI: 10.1016/s0008-8846(02)00974-2

[2] S.G. Patil, A study on porosity and pore size distribution obtained through MIP of cement paste and cement sand mortar incorporating silica fume, PhD thesis 2006; Indian Institute of Technology Delhi.

[3] D.H. Bager, E.J. Sellevold, Mercury porosimetry of hardened cement pastes: the influence of particle size. Cem. and Concr Res. 5(1975) 171-175.

DOI: 10.1016/0008-8846(75)90075-7

[4] R. Kumar, B. Bhattacharjee, Porosity, pore size distribution and in situ strength of concrete. Cem. and Concr Res. 33(2003) 155-164.

DOI: 10.1016/s0008-8846(02)00942-0

[5] B. Kondraivendhan, B. Bhattacharjee, Effect of age, w/c ratio on size and dispersion of pores in ordinary Portland cement paste. J. ACI Mater 107(2010) 147-154.

DOI: 10.14359/51663578

[6] R. Kumar, Strength and Permeation Quality of Concrete through Mercury Intrusion Porosimetry. PhD Thesis 1997; Indian Institute of Technology Delhi.

[7] IS: 8112-1989(Reaffirmed 2005). Specification for 43 grade ordinary Portland cement. Bur. of Indian Stand. New Delhi.

[8] IS: 12269-1987. Specification for 53 grade ordinary Portland cement. Bur. of Indian Stand. New Delhi.

[9] R. F. Feldman, J.J. Beaudoin, Pretreatment of hardened hydrated cement pastes for Mercury Intrusion Measurements. Cem. and Concr Res. 21(1991) 297-308.

DOI: 10.1016/0008-8846(91)90011-6

[10] S.A. Diamond, critical comparison of mercury intrusion porosimetry and capillary condensation pore size distribution of Portland cement pastes. Cem. and Concr Res. 1(1971) 531-45.

DOI: 10.1016/0008-8846(71)90058-5

[11] T. Luping, A study of the quantitative relationship between strength and pore size distribution of the porous materials. Cem. and Concr Res. 16(1986) 87-96.

DOI: 10.1016/0008-8846(86)90072-4

[12] S.G. Patil, B. Bhattacharjee, Size and volume relationship of pore for construction materials. J. Mater. Civ. Eng. 20(2008) 410-418.

DOI: 10.1061/(asce)0899-1561(2008)20:6(410)